Lia

Description

UPDATE November 2012: Lia now includes CAN bus support!

Based on theLisa/M v2.0 and with a footprint of just 34mm by 58mm, Lia is our most economical autopilot. However, it is built around the same 72MHz 64-pin STM32 processor as Lisa/M and can control fully autonomous fixed-wing, multicopter, or even transitioning vehicles (like theQuadshot) with ease. Also, its low cost and CAN interface mean it can also be used as networked extension for Lisa/M (or other devices) when many servo-style outputs are needed. Bring on the 16-rotor multicopters!

The biggest difference between Lia and Lisa/M is that Lia uses 0.1" through-holes rather than Molex Picoblade connectors to make connecting peripherals simpler and less costly - just solder up header pins or wire directly into the board!

The other main differences from Lisa/M:

I2C level shifter removed

5V voltage regulator removed

JTAG connector removed

Added provisions for multiple BEC input balancing on servo connectors

Lia includes eight 3-pin PWM outputs for connecting servos and ESCs, CAN bus support, three UART serial interfaces (for GPS, xBee, etc), and connections for up to two 2.4GHz Spektrum® DSM2-compatible remote-control satellite receivers. It can mount an Aspirin IMU onboard without increasing the overall footprint, and is compatible with the Paparazzi UAV project software.

IMU

The Aspirin series represents the next generation of ultra-small, flat Inertial Measurement Units (IMUs). Aspirin works seamlessly with Lia for easy attitude estimation in the smallest package possible. Using estimators built into the Paparazzi software, update rates of up to 512 times per second are possible.